A rare opportunity to own a beautifully maintained piece of paradise in highly desirable Key Colony Beach; owned by the same family for more than 40 years. Offered as a full duplex for $1,700,000 or purchase just one half (271 9th Street - $838,000 or 261 9th - $875,000). This property delivers exceptional dockage, timeless updates, and the certainty of a well cared for home. Located on a picturesque 100 foot wide canal, this location provides the best of Keys boating. Enjoy incredibly quick access to both the open Ocean and the open Gulf with a short 5 minute boat ride, or a peaceful 10 minute paddle. The south side (261) features a generous 42 foot dock, while the north side (271) offers 33 feet of additional dockage, providing a total of 75 feet to comfortably accommodate large vessels. The full duplex includes 4 bedrooms and 4 bathrooms with over 2,000 square feet of inviting living space, perfect for gathering, relaxing, and creating lasting memories. There is ample parking for cars, trailers, and all your island toys, plus a covered carport and storage room on the south side. Here, island living is effortless. Stroll or bike the friendly streets throughout the City of Key Colony Beach and enjoy easy access to the marina, golf course, pickleball and tennis courts, bocce ball, playgrounds, horseshoes, the Post Office, City Hall, Police Department, and the beloved Sunset Park. Your dream of a true Keys lifestyle awaits you on 9th Street. Welcome home to paradise!